(formula presented) and (formula presented) NMR spin-lattice relaxation and Knight shift of (formula presented) Evidence for an anisotropic Fermi surface

G. Papavassiliou, M. Pissas, M. Karayanni, M. Fardis, S. Koutandos, K. Prassides

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1 Citation (Scopus)

Abstract

We report a detailed study of the (formula presented) and (formula presented) NMR spin-lattice relaxation rates (formula presented) and the (formula presented) Knight shift (K) in (formula presented) (formula presented) The evolution of (formula presented) and K with x is in excellent agreement with the prediction of ab initio calculations of a highly anisotropic Fermi surface, consisting mainly of hole-type two-dimensional (2D) cylindrical sheets from bonding (formula presented) boron orbitals. The density of states at the Fermi level also decreases sharply on Al doping and the 2D sheets collapse at (formula presented) where the superconducting phase disappears.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number14
DOIs
Publication statusPublished - 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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